Not a good day. Took a friend out for a sail in 11 mph winds, came about to a port tack, and the mast snapped off when the sail caught the wind. It snapped inside the sleeve right at the base of the furling drum. It snapped the retaining clip, broke the edge off the retaining plate, and bent the mast bearing plate. I couldn't get the mast out, so we had to pedal back, wrestling the mast the whole way back. When we got back, I unhooked the sail, pulling it off along with the top half of the mast.

I'm looking at the first picture I posted and the area above the furling drum is darker (to the left in photo). Also, in the area under the split in the sleeve, the lighter-colored band (adhesive, maybe) does not extend down to the bottom of the sleeve. That could indicate that the drum came loose and allowed the mast to walk out. I just hope there is no damage in the mast cup because that would mean hull replacement. Yecchh!!!!